The title is terribly misleading and the article is silly. The bulk of the article lays out a scenario in which you would and should use a relational database.

The title is terribly misleading and the article is silly. The bulk of the article lays out a scenario in which you would and should use a relational database. i.e. he's got some data and wants to run arbitrary queries on it. Claiming that app engines isn't a good fit for startups because it's not good at this is absurd.